1、“She often puts in twelve hours' work a day”她常常一天工作十二小时。
2、“How old are you，I am twelve years old”你几岁，我十二岁。
3、“The clock stuck at twelce o'clock sharp”钟在整十二点打点。
4、“There are twelve inches in one foot”一英尺等于12英寸。
5、“A twelve hour night time curfew is force”正在执行12小时宵禁。
